Anatomic considerations for plate-screw fixation of the cervical spine.

摘要: A cadaveric study was done to investigate the variability of interfacet distances from C3 C7, learn pedicle morphology at C7-T2, and determine potential dangers plate-screw osteosynthesis technique cervical spine. Twenty-two cadavers were dissected C2 C7 expose lateral masses nerve roots. The center mass next vary widely among different individuals, ranging 9 mm 16 (average, 13 mm). new plate design is necessary better accommodate differences in patients levels. second part involved 11 specimens cervicothoracic junction. entry point 1 inferior midportion facet joint for T1, T2. medial angulation averaged 34 degrees 31.8 26.5 mediolateral superoinferior outer diameters 6.9 7.5 8.5 9.5 10.7 T2, respectively. inner diameter 5.18 mm, 6.4 5.5 T1 (from posterior vertebral body line) measured 9.1 9.9 10.4 respective margins error are small when using screws these If a screw must be used one have precise knowledge entrance point, diameters, 25-30 direction.(ABSTRACT TRUNCATED AT 250 WORDS)